1. From the Department of Neurology (M.Y.), University of California, San Francisco and the San Francisco Veterans Affairs Medical Center, San Francisco, Calif; the Department of Neurology (K.K.), Osaka University Graduate School of Medicine, Suita, Osaka, Japan; Neurology and Research Services of the San Diego Veteran’s Administration Medical Center and the Department of Neurosciences (P.L.), University of California, San Diego; and the Department of Neurology (M.P.-P.), University of Miami, Fla.